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Abstract #13102 Published in IGR 7-3
Neoplastic secondary glaucomas
Rohrbach JM; Grub M; Schlote TKlinische Monatsblätter für Augenheilkunde 2005; 222: 788-796
With few exceptions all intraocular tumours can principally induce elevation of intraocular pressure (IOP). The frequency of IOP-elevation is mainly dependent on the biologic behaviour of the neoplasm (benign / malignant), its dimensions, localization, and its ability to provoke secondary changes like retinal detachment, hemorrhages, inflammation, and necroses. There are many and diverse pathomechanisms which may cause a 'neoplastic glaucoma'. The leading mechanisms are direct invasion of the chamber angle by tumour cells, rubeosis iridis, and forward displacement of the iris-lens-diaphragm with (lens induced) pupillary block. As intraocular tumours may have pressure-lowering effects too, eyes bearing a tumour may also be hypotonic or normotonic in spite of a 'glaucomatous chamber angle morphology'. The therapy of the tumour-induced glaucomas is hardly validated and generally follows the treatment of the other secondary glaucomas. However, filtration procedures are contraindicated when a malignant tumour is diagnosed or suspected. Because of the progress of tumour therapy with salvation of eyes which had to be enucleated in former times and prolongation of survival in some tumour entities (like non-Hodgkin's lymphoma and metastases) the significance of tumour-induced glaucomas will probably further increase in the future. LA: German
Dr. J.M. Rohrbach, Abteilung I, Augenklinik des Universitats-Klinikums Tubingen, Germany. martin.rohrbach@med.uni-tuebingen.de
Classification:
9.4.8 Glaucomas associated with intraocular tumors (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders)
